IE 11 border-radius weirdness (did not occur in IE 9 and IE 10)

Question

I have searched for similar questions related to border-radius in IE 11, but only one found on the Microsoft IE Developer site described what I am also currently experiencin

Answer 1

The fractional pixel workaround can cause Firefox to skew text over by 1 pixel, due to their pixel-aligned workaround for cleartype blurriness in selective font sizes.

The overflow:hidden wrapper workaround in this msdn thread (where you posted) might be less prone to compatibility issues like that.